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Honda Accord VCM

2183 messages,  Last post on Nov 26, 2009 at 9:02 AM

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#2071 of 2183 Noise and vibration at low speed by jbhansen Feb 24, 2009 (12:23 pm)
As I've reported before in this forum, the only issue I've had with the VCM V6 is a whine and throttle pedal vibration around 1300 RPM and 20 mph. I took delivery the last week of December '08 and the car currently has 1560 miles on it.   I took the car over to the dealer (Goodson Honda North in Houston) this morning to have the above mentioned problem checked out. The technician acknowledged the sound/vibration and he checked all the active engine mounts. Everything came back normal. Apparently, the sound/vibration is indeed endemic to this vehicle. My service adviser said she would keep an eye out for service bulletins related to this issue, but other than that, I was told nothing could be done.   For me personally, this is just picking nits. I can definitely live with this. It really doesn't bother me that much and I just wanted to make sure that nothing else was wrong. Replies to this message: thegraduate (Feb 24, 2009 9:25 pm)
#2072 of 2183 Re: Noise and vibration at low speed [jbhansen] by thegraduate Feb 24, 2009 (9:25 pm)
Replying to: jbhansen (Feb 24, 2009 12:23 pm) That's odd about the gas pedal, since it isn't connected to anything mechanical like old throttle pedals; all Accords have had electronic throttles since 2006.
#2073 of 2183 VCM discussion by markm124 Mar 25, 2009 (1:58 pm)
I figured that I would add my two cents worth to the VCM discussion. I have had a 2009 EX since late November, but just recently took my first long (approx. 250 miles) trip. While I could certainly feel the VCM working, I did not find it annoying and I felt no excessive vibration. What has surprised me, though, is the low mileage that I have been getting. In mixed (mostly city) driving, I have been getting only 16-18 mpg. On this recent trip, I got only 23 mpg. It is possible that the car is not "broken in", but I expected better mileage from a 250 mile trip at a steady 65-70 mph. Replies to this message: jhinsc (Mar 26, 2009 3:25 am) markm124 (Mar 27, 2009 9:59 am) yuka (Apr 01, 2009 8:06 am) thegraduate (Apr 01, 2009 7:24 pm) jmillerjmiller (Apr 01, 2009 9:03 pm) and 10 more... jhinsc (Apr 01, 2009 9:53 am) jbhansen (Mar 27, 2009 1:09 pm) jmillerjmiller (Mar 31, 2009 8:53 pm)
#2074 of 2183 Re: VCM discussion [markm124] by jhinsc Mar 26, 2009 (3:25 am)
Replying to: markm124 (Mar 25, 2009 1:58 pm) On my 08 V6, I have just over 10,000 miles and mileage is consistenty higher now. Mileage is now slightly better than my previous 06 V6. My last 2 fillups returned 27.1 and 26.4 mpg, with 50/50 driving. Steady throttle inputs, even in city driving helps. I also dont' have a lot of hills where I live - I'm sure that's a factor. I found that getting up to speed and then holding it steady is best for good mpg's. Replies to this message: markm124 (Mar 27, 2009 9:59 am) yuka (Apr 01, 2009 8:06 am) thegraduate (Apr 01, 2009 7:24 pm) jmillerjmiller (Apr 01, 2009 9:03 pm) yuka (Apr 03, 2009 7:13 am) and 9 more... jhinsc (Apr 01, 2009 9:53 am)
#2075 of 2183 Re: VCM discussion [jhinsc] by markm124 Mar 27, 2009 (9:59 am)
Replying to: jhinsc (Mar 26, 2009 3:25 am) Thanks for the information. I don't have much over 2,000 miles. I have usually done fairly well, mileage wise, on most of my past cars. I regularly got 30+ mpg highway on my 2001 Saab 9-5. That was much higher than the government rating.
#2076 of 2183 Re: VCM discussion [markm124] by jbhansen Mar 27, 2009 (1:09 pm)
Replying to: markm124 (Mar 25, 2009 1:58 pm) 16-18mpg does seem unusually low, even for around town driving. As a comparison to your road trip, I drove a 300 mile round trip last weekend and got better than 27mpg. I've been getting 22-24mpg with mostly around town driving.
#2078 of 2183 Wish I saw this sooner by ron_211 Mar 31, 2009 (9:39 am)
I just traded my 2001 Passat V6 for a new 2009 Accord V6. Everyone told me how great Hondas were and after a short test drive I moved quickly to buy this new car. The Passat has a really smooth ride, always had to watch to be sure I wasn't speeding. On my first drive to work (50 miles of mostly highway) in the new Accord was a real disappointment. Vibration and a feeling of the engine missing are quite annoying. At a steady speed on a flat road it’s not bad, but who gets to drive like that. I only have a little over 100 miles on the car and I can already see I made a big mistake.
#2080 of 2183 Re: VCM discussion [markm124] by jmillerjmiller Mar 31, 2009 (8:53 pm)
Replying to: markm124 (Mar 25, 2009 1:58 pm) Just to add another 2008 Accord V6 navi mileage (just about 5000 miles on the car) to the list: Around town local driving with my lead foot I get around 17MPG - about the same as my prior Subaru Outback Turbo four cylinder which was rated that year at 250 horsepower. On the highway only trips, using cruise it is about 24MPG in western PA on the turnpike (hilly terrain), but rises up to about 26MPG on the Ohio flatland. Cruising speed is about 73 if traffic is good, unless in WV, then 78. This is about what I expected - this is a much bigger, heavier, and powerful car compared to my first 1993 Honda Accord EX 5spd that turned in 29 in mixed driving (that was the 150HP Vtec four). The only way to truly get good fuel mileage for my heavy foot driving style would be to buy a small car with a small engine and a manual.   VCM seems least obtrusive when the cruise is in use, otherwise you can find yourself adding more throttle than needed and provoking the mini-downshift like feel to the six cylinder mode (kinda like when dropping overdrive on the old style transmissions).   I haven't seen any company offer a performance program for the engine computer - they could shutdown the VCM mode etc and not have to worry about the gov't. I suspect Honda cannot offer a disable for the system without running foul of federal regulations regarding the emissions cert of which the engine computer is an important component.

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